Modern Rodding Tech

InTheGarageMedia.com
Inflation Gone Wild Title
1. Here’s our inflatable spray booth that we purchased from Vevor. It comes with two blowers that must run constantly. One blower inflates the booth while the other circulates air through filtered panels. The neighbors will think it’s a bouncy house for the grandkids.
New Equipment Lets You Paint Like a Pro at Home

By Gerry Burger Photography by THE AUTHOR

P

aint and bodywork, two of the most important aspects of building a hot rod. While these two words strike fear in the hearts of many, today there are new tools and materials that make the process more doable. Like most things, everything required to do bodywork is available on the Internet. When it came time to do the bodywork and paint on our ’36 Ford phaeton we used Summit Racing brand materials. The reasoning was simple: quality products, fast delivery, and the price is attractive, too. We used all Summit Racing materials, from the body filler to the finish primer. We also used their house brand dry sandpapers, while the finish wet sandpaper was 3M and USC brands. Over the years it has been our experience that using materials from the same manufacturer eliminates compatibility problems. Things that are not yet available via mail order include patience and desire. If you have a supply of those two things, you can produce a high-quality paintjob at home.

We touched on the fabricating, filling, and priming of our panels in previous tech pieces, now it’s time for the glory … we’re going to lay down the color in a basic, non-metallic, single-stage urethane paint. We simply picked the color from the fleet color samples at our local autobody supply store and had them mix up 1-1/2 gallons of the PPG Delfleet Essential Urethane. (The guy behind the counter told us, “You’re gonna love this stuff,” and he wasn’t kidding.)

The process of laying down the final finish has gotten easier yet at the same time the process has become more complicated. With the new HVLP (high volume, low pressure) spray guns (Editor’s note: Burger considers anything developed in the past 40 years “new.”) there is less overspray, so more of the paint goes on the panel and less into the air. The days of lowering the garage door down on a couple of window fans and spraying lacquer are behind us. The fast flash time of lacquer made it possible to paint in any garage by simply covering your toolboxes and such. The downside to modern urethane paints is the flash time is slow enough that you must spray in a clean environment, preferably filtered air, and the overspray sticks to everything, so extensive covering is required. We have seen garages converted into makeshift spray booths with varying degrees of sophistication and success (or lack thereof) and they produced successful paintjobs. We were considering such a homebrewed booth when we stumbled across the inflatable spray booth. Think of it as a “bouncy house” for hot rodders of all ages. We were amazed when we first saw them and pleased that they are somewhat affordable. At under $700 you have an inflatable booth large enough for a ’36 Ford phaeton. The booth comes complete with a floor, so it truly is a clean environment. Now, adding that amount of money to your home paintjob may seem like a deal breaker, but we fully expect to sell the booth for half-price, so now we’re talking less than $400 per paintjob. If you plan on painting several cars the booth quickly pays for itself. The quality of the finish makes this a worthwhile investment.

Our shop has a large air compressor suitable for painting an entire car with an inline filter and evaporator to keep the air clean and dry. I also have a well-maintained, 30-year-old Sharpe spray gun. However, the last time I used it there were some issues with it so I decided to step up to a new spray gun. Now, true confessions, time is catching up to me, so this will be my last full paintjob. Because of that, I didn’t want to spend a ton of money on a spray gun, but I also didn’t trust a super-cheap gun. After some research I opted for a Summit HVLP spray gun (PN SUM-02-40001) with the 1.4mm tip and an aluminum cup. I had my expensive but aged professional-grade gun on standby in case the new gun didn’t measure up. Well, I could not have been more pleased with the Summit Racing spray gun. I sprayed some reducer through the gun first and it took virtually no adjustment other than air pressure. With a thorough cleaning after each use, this gun performed flawlessly. We cannot stress how important it is to do a thorough cleaning immediately after spraying. Catalyzed paint will harden in all the wrong places, so clean the gun and cup thoroughly and change the small filter in the bottom of the cup. Using a dedicated spray gun cleaner and a cleaning kit will ensure good results.

In preparation for the finished paint, we did something odd—we followed the paint manufacturer’s directions. While some folks are finish sanding panels to 600-grit, the directions said sand to 320-grit. We were doubtful, so we first did the taillights and other small panels as a test and sure enough we had a perfect topcoat. No work scratches.

Today, mixing the final finish paint is a precise process, and once again following the paint manufacturer’s instructions is imperative. This involves using mixing cups, filtering the paint, and using reducers that are appropriate for the spraying temperatures. The Delfleet Essential Urethane paint is a three-part paint, the reducer is called a hardener, and the third ingredient is the catalyst. New urethane paints are incredibly durable and lay down nicely with the proper spray equipment, the proper clean air pressure, and a dust-free environment. It is important to spend time properly hanging parts and placing them on workhorses so you can apply a uniform coat to all sides of the pieces. We have a great parts rack from Summit (PN SUM-918069) that holds everything from our ’36 phaeton doors to small pieces like the headlights and taillights. Racks like these pay for themselves in one paintjob, and they make it easy to roll parts in and out of the spray booth; we even use it for spray can work, roll it outside and roll it back inside. It sure beats dropping a piece onto the floor from some makeshift rack.

We prepared for the spray day with a high-quality respirator, rubber gloves, and full body covering. We laid down three full coats and were very pleased with the finish. We had a trace of orange peel, which is typical of most urethane finishes, but we were certain this would cut and buff to a great final finish.

Now, I learned the secrets of cutting and buffing urethane paint from one of the best in the business, Joe Bailey at Alloway’s Hot Rod Shop. Anyone who has ever seen an Alloway paintjob knows there’s none finer. Of course, no autobody guy does things exactly the same, but I was pretty darn close to Bailey’s method. My first cut on the cured paint was 800-grit (wet) followed by 1,500-grit, then 2,000-grit, 2,500-grit, and finally 3,000-grit wet papers. (Bailey begins with 600-grit and finishes with 2,500-grit). We taped the edge of the doors until it was time for the 2,000-grit paper and even then we were extremely careful to not sand through the edges.

After the sanding, polishing begins with a Schlegel wool pad (PN SHL-175C) and 3M Finesse-it II (PN 05928) with our buffer set at about 1,000 rpm. It is best to work urethane paints at this slower speed to avoid potential burning of the paint. That brings up the basic shine. Next we polish using 3M Perfect-it EX (PN 06068) and a Synthetic Wool pad (PN SHL-275C), which takes the polishing haze off the finish and the depth is beginning to show. Then we go to a 3M black foam pad (PN TES-7000000484) still using the Perfect-it EX. The finishing touch is done with a 3M blue pad Perfect-it Ultrafine foam pad (PN TES-7100003841) still using the Perfect-it Ultrafine Machine Polish. Then wipe it all down with a micro-fiber cloth and some spray detailer, followed by a non-abrasive wax for protection and you should have an excellent finish.

By the time you finish painting and buffing your car the price of a custom paintjob begins to make sense. The hours involved in this final finish work is amazing, but in the end, you’ll have the satisfaction of saying you painted the car yourself.

Note our work horses are wrapped in fresh masking tape to ensure they are clean. The black panels at the end of the booth are “air in” while the two large black panels are “air out.” Note the Summit rolling rack on the left holding the inner fender panels. Plastic panels allow ample light.
2. Note our work horses are wrapped in fresh masking tape to ensure they are clean. The black panels at the end of the booth are “air in” while the two large black panels are “air out.” Note the Summit rolling rack on the left holding the inner fender panels. Plastic panels allow ample light.
Our last prep is a wipe down with Summit Surface Wash (PN SUM-UP403Q). This is like a prep solvent but evaporates faster and is now our favorite paint preparation solvent. Use lint-free rags, and a tack cloth is also a good idea.
3. Our last prep is a wipe down with Summit Surface Wash (PN SUM-UP403Q). This is like a prep solvent but evaporates faster and is now our favorite paint preparation solvent. Use lint-free rags, and a tack cloth is also a good idea.
By unzipping the entire door, we were able to roll our ’36 Ford phaeton into the booth for painting. Painting urethane paint without a booth brings all kinds of problems; a clean environment is a must.
4. By unzipping the entire door, we were able to roll our ’36 Ford phaeton into the booth for painting. Painting urethane paint without a booth brings all kinds of problems; a clean environment is a must.
We used PPG Delfleet Essential paint with the proper hardener (thinner) and catalyst. Mixing to the manufacturer’s specification ensures good results. We picked our blue color from the fleet color swatches.
5. We used PPG Delfleet Essential paint with the proper hardener (thinner) and catalyst. Mixing to the manufacturer’s specification ensures good results. We picked our blue color from the fleet color swatches.
When it came time to lay down the final finish, we used this Summit spray gun (PN SUM-918069). We would classify this a midrange-priced gun, a step above but still affordable. We were thrilled with the way it worked. It also pays to have a spray gun holder (PN APT-GFH1000) on hand for the HVLP guns; that is also available from Summit.
6. When it came time to lay down the final finish, we used this Summit spray gun (PN SUM-918069). We would classify this a midrange-priced gun, a step above but still affordable. We were thrilled with the way it worked. It also pays to have a spray gun holder (PN APT-GFH1000) on hand for the HVLP guns; that is also available from Summit.
We did the fenders and small parts first and between the new spray gun, quality paint, and a clean, dirt-free environment we laid down a superclean paintjob.
7. We did the fenders and small parts first and between the new spray gun, quality paint, and a clean, dirt-free environment we laid down a superclean paintjob.
Hanging parts is a great way to ensure you get complete coverage. Having the parts at eye level also makes laying down a nice, even coat easier. We use this rolling rack from Summit Racing  (PN SUM-918069) for all our painting needs.
8. Hanging parts is a great way to ensure you get complete coverage. Having the parts at eye level also makes laying down a nice, even coat easier. We use this rolling rack from Summit Racing (PN SUM-918069) for all our painting needs.
We left the panels to dry/cure in the booth for several hours. We decided to paint the body the next day, so it was time for a thorough spray gun cleaning. After running some basic urethane reducer through the gun, we followed up with paint gun cleaner (PN SUM-407Q) and brushes to ensure a superclean gun.
9. We left the panels to dry/cure in the booth for several hours. We decided to paint the body the next day, so it was time for a thorough spray gun cleaning. After running some basic urethane reducer through the gun, we followed up with paint gun cleaner (PN SUM-407Q) and brushes to ensure a superclean gun.
We allowed the paint to cure for three days before we began sanding. Every painter will handle the waiting period differently. We wet-sanded in five stages, beginning with 800-grit, followed by 1,500-, 2,000-, 2,500-, and finishing with 3,000-grit. Longer sanding time means much less buffing time.
10. We allowed the paint to cure for three days before we began sanding. Every painter will handle the waiting period differently. We wet-sanded in five stages, beginning with 800-grit, followed by 1,500-, 2,000-, 2,500-, and finishing with 3,000-grit. Longer sanding time means much less buffing time.
We use low-tack blue tape on the edges to remind us not to sand too close to the edge. This prevents dreaded sand-through. Here the door has been sanded with 2,500-grit. We removed the tape and carefully sanded to the door edge, then followed by sanding the entire door with 3,000. A well-sanded panel will begin to shine.
11. We use low-tack blue tape on the edges to remind us not to sand too close to the edge. This prevents dreaded sand-through. Here the door has been sanded with 2,500-grit. We removed the tape and carefully sanded to the door edge, then followed by sanding the entire door with 3,000. A well-sanded panel will begin to shine.
Buffing begins with a wool pad and 3M Finesse-It II Machine Polish. Run the buffer at a relatively slow 1,000-rpm speed to prevent burning the paint. Light pressure is all that is required. Remember, you’re polishing paint, not grinding steel.
12. Buffing begins with a wool pad and 3M Finesse-It II Machine Polish. Run the buffer at a relatively slow 1,000-rpm speed to prevent burning the paint. Light pressure is all that is required. Remember, you’re polishing paint, not grinding steel.
Like the sanding, polishing is a five-step process. First the wool pad, then the synthetic wool pad, followed by black and blue pads. We applied a final finishing cream with the yellow pad but a blue pad can also be used.
13. Like the sanding, polishing is a five-step process. First the wool pad, then the synthetic wool pad, followed by black and blue pads. We applied a final finishing cream with the yellow pad but a blue pad can also be used.
The 3M Machine Polishes go a long way so one bottle of each should be enough to do an entire car with some to spare. Begin polishing with Finesse-It II, followed by the Perfect-It EX Ultrafine Machine Polish on the synthetic wool pad and the foam pads.
14. The 3M Machine Polishes go a long way so one bottle of each should be enough to do an entire car with some to spare. Begin polishing with Finesse-It II, followed by the Perfect-It EX Ultrafine Machine Polish on the synthetic wool pad and the foam pads.
After we did the cut and buff on the body and fenders it was time for a bit of assembly. True confessions, we painted the wheelwells with satin black enamel using a brush. We’re building a driver, not an AMBR contender.
15. After we did the cut and buff on the body and fenders it was time for a bit of assembly. True confessions, we painted the wheelwells with satin black enamel using a brush. We’re building a driver, not an AMBR contender.
We made a thread chaser out of a 5/16-24 bolt by cutting four reliefs in the threads of a bolt. We ran this homebrewed chase through all the cage nuts that attach the rear fender. This is time well spent as all bolts start easily.
16. We made a thread chaser out of a 5/16-24 bolt by cutting four reliefs in the threads of a bolt. We ran this homebrewed chase through all the cage nuts that attach the rear fender. This is time well spent as all bolts start easily.
Fender welting was clamped to the fender and the mounting holes were marked. Leave extra welting on both ends and trim to fit the ends after the fender is mounted to the body.
17. Fender welting was clamped to the fender and the mounting holes were marked. Leave extra welting on both ends and trim to fit the ends after the fender is mounted to the body.
A 3/4-inch arch punch was used to make the holes. In some cases, the welting must be cut in a wedge shape to make final adjustment possible. Fitting the welting perfectly takes time and patience but it makes a big difference in the final appearance.
18. A 3/4-inch arch punch was used to make the holes. In some cases, the welting must be cut in a wedge shape to make final adjustment possible. Fitting the welting perfectly takes time and patience but it makes a big difference in the final appearance.
We spent some time cleaning up the suspension bits under the car along with the housing of our John’s Industries 9-inch rear. Simple parallel leaf springs and tube shocks work well on ’35-40 Ford frames.
19. We spent some time cleaning up the suspension bits under the car along with the housing of our John’s Industries 9-inch rear. Simple parallel leaf springs and tube shocks work well on ’35-40 Ford frames.
We couldn’t help but do a little glory work, so we spent some time cleaning up our Coker Tire wide whites and chrome reverse rims. This wheel-and-tire combo is in keeping with our traditional mild-custom approach on our ’36 tub.
20. We couldn’t help but do a little glory work, so we spent some time cleaning up our Coker Tire wide whites and chrome reverse rims. This wheel-and-tire combo is in keeping with our traditional mild-custom approach on our ’36 tub.
This rear shot shows we are making progress. The modified ’39 Packard taillights work well on the ’36 fenders and we are very pleased with the overall paint finish on the car. This is rolling proof that a high-quality paintjob can be achieved at home … particularly in this time of inflation.
21. This rear shot shows we are making progress. The modified ’39 Packard taillights work well on the ’36 fenders and we are very pleased with the overall paint finish on the car. This is rolling proof that a high-quality paintjob can be achieved at home … particularly in this time of inflation.
Summit Racing
(800) 230-3030
summitracing.com
Coker Tire
(866) 515-3215
cokertire.com
John’s Industries
(800) 332-3450
johnsindustries.com
Modern Rodding

VOLUME 3 • ISSUE 19 • 2022